drivers/net/wireless/wl12xx/wl1271_cmd.c

   1 /*
   2  * This file is part of wl1271
   3  *
   4  * Copyright (C) 2009 Nokia Corporation
   5  *
   6  * Contact: Luciano Coelho <luciano.coelho@nokia.com>
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * version 2 as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  20  * 02110-1301 USA
  21  *
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/platform_device.h>
  26 #include <linux/crc7.h>
  27 #include <linux/spi/spi.h>
  28 #include <linux/etherdevice.h>
  29
  30 #include "wl1271.h"
  31 #include "wl1271_reg.h"
  32 #include "wl1271_spi.h"
  33 #include "wl1271_acx.h"
  34 #include "wl12xx_80211.h"
  35 #include "wl1271_cmd.h"
  36
  37 /*
  38  * send command to firmware
  39  *
  40  * @wl: wl struct
  41  * @id: command id
  42  * @buf: buffer containing the command, must work with dma
  43  * @len: length of the buffer
  44  */
  45 int wl1271_cmd_send(struct wl1271 *wl, u16 id, void *buf, size_t len,
  46                     size_t res_len)
  47 {
  48         struct wl1271_cmd_header *cmd;
  49         unsigned long timeout;
  50         u32 intr;
  51         int ret = 0;
  52         u16 status;
  53
  54         cmd = buf;
  55         cmd->id = cpu_to_le16(id);
  56         cmd->status = 0;
  57
  58         WARN_ON(len % 4 != 0);
  59
  60         wl1271_spi_write(wl, wl->cmd_box_addr, buf, len, false);
  61
  62         wl1271_spi_write32(wl, ACX_REG_INTERRUPT_TRIG, INTR_TRIG_CMD);
  63
  64         timeout = jiffies + msecs_to_jiffies(WL1271_COMMAND_TIMEOUT);
  65
  66         intr = wl1271_spi_read32(wl, ACX_REG_INTERRUPT_NO_CLEAR);
  67         while (!(intr & WL1271_ACX_INTR_CMD_COMPLETE)) {
  68                 if (time_after(jiffies, timeout)) {
  69                         wl1271_error("command complete timeout");
  70                         ret = -ETIMEDOUT;
  71                         goto out;
  72                 }
  73
  74                 msleep(1);
  75
  76                 intr = wl1271_spi_read32(wl, ACX_REG_INTERRUPT_NO_CLEAR);
  77         }
  78
  79         /* read back the status code of the command */
  80         if (res_len == 0)
  81                 res_len = sizeof(struct wl1271_cmd_header);
  82         wl1271_spi_read(wl, wl->cmd_box_addr, cmd, res_len, false);
  83
  84         status = le16_to_cpu(cmd->status);
  85         if (status != CMD_STATUS_SUCCESS) {
  86                 wl1271_error("command execute failure %d", status);
  87                 ret = -EIO;
  88         }
  89
  90         wl1271_spi_write32(wl, ACX_REG_INTERRUPT_ACK,
  91                            WL1271_ACX_INTR_CMD_COMPLETE);
  92
  93 out:
  94         return ret;
  95 }
  96
  97 static int wl1271_cmd_cal_channel_tune(struct wl1271 *wl)
  98 {
  99         struct wl1271_cmd_cal_channel_tune *cmd;
 100         int ret = 0;
 101
 102         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 103         if (!cmd)
 104                 return -ENOMEM;
 105
 106         cmd->test.id = TEST_CMD_CHANNEL_TUNE;
 107
 108         cmd->band = WL1271_CHANNEL_TUNE_BAND_2_4;
 109         /* set up any channel, 7 is in the middle of the range */
 110         cmd->channel = 7;
 111
 112         ret = wl1271_cmd_test(wl, cmd, sizeof(*cmd), 0);
 113         if (ret < 0)
 114                 wl1271_warning("TEST_CMD_CHANNEL_TUNE failed");
 115
 116         kfree(cmd);
 117         return ret;
 118 }
 119
 120 static int wl1271_cmd_cal_update_ref_point(struct wl1271 *wl)
 121 {
 122         struct wl1271_cmd_cal_update_ref_point *cmd;
 123         int ret = 0;
 124
 125         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 126         if (!cmd)
 127                 return -ENOMEM;
 128
 129         cmd->test.id = TEST_CMD_UPDATE_PD_REFERENCE_POINT;
 130
 131         /* FIXME: still waiting for the correct values */
 132         cmd->ref_power    = 0;
 133         cmd->ref_detector = 0;
 134
 135         cmd->sub_band     = WL1271_PD_REFERENCE_POINT_BAND_B_G;
 136
 137         ret = wl1271_cmd_test(wl, cmd, sizeof(*cmd), 0);
 138         if (ret < 0)
 139                 wl1271_warning("TEST_CMD_UPDATE_PD_REFERENCE_POINT failed");
 140
 141         kfree(cmd);
 142         return ret;
 143 }
 144
 145 static int wl1271_cmd_cal_p2g(struct wl1271 *wl)
 146 {
 147         struct wl1271_cmd_cal_p2g *cmd;
 148         int ret = 0;
 149
 150         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 151         if (!cmd)
 152                 return -ENOMEM;
 153
 154         cmd->test.id = TEST_CMD_P2G_CAL;
 155
 156         cmd->sub_band_mask = WL1271_CAL_P2G_BAND_B_G;
 157
 158         ret = wl1271_cmd_test(wl, cmd, sizeof(*cmd), 0);
 159         if (ret < 0)
 160                 wl1271_warning("TEST_CMD_P2G_CAL failed");
 161
 162         kfree(cmd);
 163         return ret;
 164 }
 165
 166 static int wl1271_cmd_cal(struct wl1271 *wl)
 167 {
 168         /*
 169          * FIXME: we must make sure that we're not sleeping when calibration
 170          * is done
 171          */
 172         int ret;
 173
 174         wl1271_notice("performing tx calibration");
 175
 176         ret = wl1271_cmd_cal_channel_tune(wl);
 177         if (ret < 0)
 178                 return ret;
 179
 180         ret = wl1271_cmd_cal_update_ref_point(wl);
 181         if (ret < 0)
 182                 return ret;
 183
 184         ret = wl1271_cmd_cal_p2g(wl);
 185         if (ret < 0)
 186                 return ret;
 187
 188         return ret;
 189 }
 190
 191 int wl1271_cmd_general_parms(struct wl1271 *wl)
 192 {
 193         struct wl1271_general_parms_cmd *gen_parms;
 194         struct conf_general_parms *g = &wl->conf.init.genparam;
 195         int ret;
 196
 197         gen_parms = kzalloc(sizeof(*gen_parms), GFP_KERNEL);
 198         if (!gen_parms)
 199                 return -ENOMEM;
 200
 201         gen_parms->test.id = TEST_CMD_INI_FILE_GENERAL_PARAM;
 202
 203         gen_parms->ref_clk = g->ref_clk;
 204         gen_parms->settling_time = g->settling_time;
 205         gen_parms->clk_valid_on_wakeup = g->clk_valid_on_wakeup;
 206         gen_parms->dc2dcmode = g->dc2dcmode;
 207         gen_parms->single_dual_band = g->single_dual_band;
 208         gen_parms->tx_bip_fem_autodetect = g->tx_bip_fem_autodetect;
 209         gen_parms->tx_bip_fem_manufacturer = g->tx_bip_fem_manufacturer;
 210         gen_parms->settings = g->settings;
 211
 212         gen_parms->sr_state = g->sr_state;
 213
 214         memcpy(gen_parms->srf1,
 215                g->srf1,
 216                CONF_MAX_SMART_REFLEX_PARAMS);
 217         memcpy(gen_parms->srf2,
 218                g->srf2,
 219                CONF_MAX_SMART_REFLEX_PARAMS);
 220         memcpy(gen_parms->srf3,
 221                g->srf3,
 222                CONF_MAX_SMART_REFLEX_PARAMS);
 223         memcpy(gen_parms->sr_debug_table,
 224                g->sr_debug_table,
 225                CONF_MAX_SMART_REFLEX_PARAMS);
 226
 227         gen_parms->sr_sen_n_p = g->sr_sen_n_p;
 228         gen_parms->sr_sen_n_p_gain = g->sr_sen_n_p_gain;
 229         gen_parms->sr_sen_nrn = g->sr_sen_nrn;
 230         gen_parms->sr_sen_prn = g->sr_sen_prn;
 231
 232         ret = wl1271_cmd_test(wl, gen_parms, sizeof(*gen_parms), 0);
 233         if (ret < 0)
 234                 wl1271_warning("CMD_INI_FILE_GENERAL_PARAM failed");
 235
 236         kfree(gen_parms);
 237         return ret;
 238 }
 239
 240 int wl1271_cmd_radio_parms(struct wl1271 *wl)
 241 {
 242         struct wl1271_radio_parms_cmd *radio_parms;
 243         struct conf_radio_parms *r = &wl->conf.init.radioparam;
 244         int i, ret;
 245
 246         radio_parms = kzalloc(sizeof(*radio_parms), GFP_KERNEL);
 247         if (!radio_parms)
 248                 return -ENOMEM;
 249
 250         radio_parms->test.id = TEST_CMD_INI_FILE_RADIO_PARAM;
 251
 252         /* Static radio parameters */
 253         radio_parms->rx_trace_loss = r->rx_trace_loss;
 254         radio_parms->tx_trace_loss = r->tx_trace_loss;
 255         memcpy(radio_parms->rx_rssi_and_proc_compens,
 256                r->rx_rssi_and_proc_compens,
 257                CONF_RSSI_AND_PROCESS_COMPENSATION_SIZE);
 258
 259         memcpy(radio_parms->rx_trace_loss_5, r->rx_trace_loss_5,
 260                CONF_NUMBER_OF_SUB_BANDS_5);
 261         memcpy(radio_parms->tx_trace_loss_5, r->tx_trace_loss_5,
 262                CONF_NUMBER_OF_SUB_BANDS_5);
 263         memcpy(radio_parms->rx_rssi_and_proc_compens_5,
 264                r->rx_rssi_and_proc_compens_5,
 265                CONF_RSSI_AND_PROCESS_COMPENSATION_SIZE);
 266
 267         /* Dynamic radio parameters */
 268         radio_parms->tx_ref_pd_voltage = cpu_to_le16(r->tx_ref_pd_voltage);
 269         radio_parms->tx_ref_power = r->tx_ref_power;
 270         radio_parms->tx_offset_db = r->tx_offset_db;
 271
 272         memcpy(radio_parms->tx_rate_limits_normal, r->tx_rate_limits_normal,
 273                CONF_NUMBER_OF_RATE_GROUPS);
 274         memcpy(radio_parms->tx_rate_limits_degraded, r->tx_rate_limits_degraded,
 275                CONF_NUMBER_OF_RATE_GROUPS);
 276         memcpy(radio_parms->tx_rate_limits_extreme, r->tx_rate_limits_extreme,
 277                CONF_NUMBER_OF_RATE_GROUPS);
 278
 279         memcpy(radio_parms->tx_channel_limits_11b, r->tx_channel_limits_11b,
 280                CONF_NUMBER_OF_CHANNELS_2_4);
 281         memcpy(radio_parms->tx_channel_limits_ofdm, r->tx_channel_limits_ofdm,
 282                CONF_NUMBER_OF_CHANNELS_2_4);
 283         memcpy(radio_parms->tx_pdv_rate_offsets, r->tx_pdv_rate_offsets,
 284                CONF_NUMBER_OF_RATE_GROUPS);
 285         memcpy(radio_parms->tx_ibias, r->tx_ibias, CONF_NUMBER_OF_RATE_GROUPS);
 286
 287         radio_parms->rx_fem_insertion_loss = r->rx_fem_insertion_loss;
 288         radio_parms->degraded_low_to_normal_threshold =
 289                 r->degraded_low_to_normal_threshold;
 290         radio_parms->degraded_normal_to_high_threshold =
 291                 r->degraded_normal_to_high_threshold;
 292
 293
 294         for (i = 0; i < CONF_NUMBER_OF_SUB_BANDS_5; i++)
 295                 radio_parms->tx_ref_pd_voltage_5[i] =
 296                         cpu_to_le16(r->tx_ref_pd_voltage_5[i]);
 297         memcpy(radio_parms->tx_ref_power_5, r->tx_ref_power_5,
 298                CONF_NUMBER_OF_SUB_BANDS_5);
 299         memcpy(radio_parms->tx_offset_db_5, r->tx_offset_db_5,
 300                CONF_NUMBER_OF_SUB_BANDS_5);
 301         memcpy(radio_parms->tx_rate_limits_normal_5,
 302                r->tx_rate_limits_normal_5, CONF_NUMBER_OF_RATE_GROUPS);
 303         memcpy(radio_parms->tx_rate_limits_degraded_5,
 304                r->tx_rate_limits_degraded_5, CONF_NUMBER_OF_RATE_GROUPS);
 305         memcpy(radio_parms->tx_rate_limits_extreme_5,
 306                r->tx_rate_limits_extreme_5, CONF_NUMBER_OF_RATE_GROUPS);
 307         memcpy(radio_parms->tx_channel_limits_ofdm_5,
 308                r->tx_channel_limits_ofdm_5, CONF_NUMBER_OF_CHANNELS_5);
 309         memcpy(radio_parms->tx_pdv_rate_offsets_5, r->tx_pdv_rate_offsets_5,
 310                CONF_NUMBER_OF_RATE_GROUPS);
 311         memcpy(radio_parms->tx_ibias_5, r->tx_ibias_5,
 312                CONF_NUMBER_OF_RATE_GROUPS);
 313         memcpy(radio_parms->rx_fem_insertion_loss_5,
 314                r->rx_fem_insertion_loss_5, CONF_NUMBER_OF_SUB_BANDS_5);
 315         radio_parms->degraded_low_to_normal_threshold_5 =
 316                 r->degraded_low_to_normal_threshold_5;
 317         radio_parms->degraded_normal_to_high_threshold_5 =
 318                 r->degraded_normal_to_high_threshold_5;
 319
 320         wl1271_dump(DEBUG_CMD, "TEST_CMD_INI_FILE_RADIO_PARAM: ",
 321                     radio_parms, sizeof(*radio_parms));
 322
 323         ret = wl1271_cmd_test(wl, radio_parms, sizeof(*radio_parms), 0);
 324         if (ret < 0)
 325                 wl1271_warning("CMD_INI_FILE_RADIO_PARAM failed");
 326
 327         kfree(radio_parms);
 328         return ret;
 329 }
 330
 331 int wl1271_cmd_join(struct wl1271 *wl)
 332 {
 333         static bool do_cal = true;
 334         struct wl1271_cmd_join *join;
 335         int ret, i;
 336         u8 *bssid;
 337
 338         /* FIXME: remove when we get calibration from the factory */
 339         if (do_cal) {
 340                 ret = wl1271_cmd_cal(wl);
 341                 if (ret < 0)
 342                         wl1271_warning("couldn't calibrate");
 343                 else
 344                         do_cal = false;
 345         }
 346
 347         join = kzalloc(sizeof(*join), GFP_KERNEL);
 348         if (!join) {
 349                 ret = -ENOMEM;
 350                 goto out;
 351         }
 352
 353         wl1271_debug(DEBUG_CMD, "cmd join");
 354
 355         /* Reverse order BSSID */
 356         bssid = (u8 *) &join->bssid_lsb;
 357         for (i = 0; i < ETH_ALEN; i++)
 358                 bssid[i] = wl->bssid[ETH_ALEN - i - 1];
 359
 360         join->rx_config_options = cpu_to_le32(wl->rx_config);
 361         join->rx_filter_options = cpu_to_le32(wl->rx_filter);
 362         join->bss_type = wl->bss_type;
 363
 364         /*
 365          * FIXME: disable temporarily all filters because after commit
 366          * 9cef8737 "mac80211: fix managed mode BSSID handling" broke
 367          * association. The filter logic needs to be implemented properly
 368          * and once that is done, this hack can be removed.
 369          */
 370         join->rx_config_options = cpu_to_le32(0);
 371         join->rx_filter_options = cpu_to_le32(WL1271_DEFAULT_RX_FILTER);
 372
 373         if (wl->band == IEEE80211_BAND_2GHZ)
 374                 join->basic_rate_set = cpu_to_le32(CONF_HW_BIT_RATE_1MBPS   |
 375                                                    CONF_HW_BIT_RATE_2MBPS   |
 376                                                    CONF_HW_BIT_RATE_5_5MBPS |
 377                                                    CONF_HW_BIT_RATE_11MBPS);
 378         else {
 379                 join->bss_type |= WL1271_JOIN_CMD_BSS_TYPE_5GHZ;
 380                 join->basic_rate_set = cpu_to_le32(CONF_HW_BIT_RATE_6MBPS  |
 381                                                    CONF_HW_BIT_RATE_12MBPS |
 382                                                    CONF_HW_BIT_RATE_24MBPS);
 383         }
 384
 385         join->beacon_interval = cpu_to_le16(WL1271_DEFAULT_BEACON_INT);
 386         join->dtim_interval = WL1271_DEFAULT_DTIM_PERIOD;
 387
 388         join->channel = wl->channel;
 389         join->ssid_len = wl->ssid_len;
 390         memcpy(join->ssid, wl->ssid, wl->ssid_len);
 391         join->ctrl = WL1271_JOIN_CMD_CTRL_TX_FLUSH;
 392
 393         /* increment the session counter */
 394         wl->session_counter++;
 395         if (wl->session_counter >= SESSION_COUNTER_MAX)
 396                 wl->session_counter = 0;
 397
 398         join->ctrl |= wl->session_counter << WL1271_JOIN_CMD_TX_SESSION_OFFSET;
 399
 400         /* reset TX security counters */
 401         wl->tx_security_last_seq = 0;
 402         wl->tx_security_seq_16 = 0;
 403         wl->tx_security_seq_32 = 0;
 404
 405         ret = wl1271_cmd_send(wl, CMD_START_JOIN, join, sizeof(*join), 0);
 406         if (ret < 0) {
 407                 wl1271_error("failed to initiate cmd join");
 408                 goto out_free;
 409         }
 410
 411         /*
 412          * ugly hack: we should wait for JOIN_EVENT_COMPLETE_ID but to
 413          * simplify locking we just sleep instead, for now
 414          */
 415         msleep(10);
 416
 417 out_free:
 418         kfree(join);
 419
 420 out:
 421         return ret;
 422 }
 423
 424 /**
 425  * send test command to firmware
 426  *
 427  * @wl: wl struct
 428  * @buf: buffer containing the command, with all headers, must work with dma
 429  * @len: length of the buffer
 430  * @answer: is answer needed
 431  */
 432 int wl1271_cmd_test(struct wl1271 *wl, void *buf, size_t buf_len, u8 answer)
 433 {
 434         int ret;
 435         size_t res_len = 0;
 436
 437         wl1271_debug(DEBUG_CMD, "cmd test");
 438
 439         if (answer)
 440                 res_len = buf_len;
 441
 442         ret = wl1271_cmd_send(wl, CMD_TEST, buf, buf_len, res_len);
 443
 444         if (ret < 0) {
 445                 wl1271_warning("TEST command failed");
 446                 return ret;
 447         }
 448
 449         return ret;
 450 }
 451
 452 /**
 453  * read acx from firmware
 454  *
 455  * @wl: wl struct
 456  * @id: acx id
 457  * @buf: buffer for the response, including all headers, must work with dma
 458  * @len: lenght of buf
 459  */
 460 int wl1271_cmd_interrogate(struct wl1271 *wl, u16 id, void *buf, size_t len)
 461 {
 462         struct acx_header *acx = buf;
 463         int ret;
 464
 465         wl1271_debug(DEBUG_CMD, "cmd interrogate");
 466
 467         acx->id = cpu_to_le16(id);
 468
 469         /* payload length, does not include any headers */
 470         acx->len = cpu_to_le16(len - sizeof(*acx));
 471
 472         ret = wl1271_cmd_send(wl, CMD_INTERROGATE, acx, sizeof(*acx), len);
 473         if (ret < 0)
 474                 wl1271_error("INTERROGATE command failed");
 475
 476         return ret;
 477 }
 478
 479 /**
 480  * write acx value to firmware
 481  *
 482  * @wl: wl struct
 483  * @id: acx id
 484  * @buf: buffer containing acx, including all headers, must work with dma
 485  * @len: length of buf
 486  */
 487 int wl1271_cmd_configure(struct wl1271 *wl, u16 id, void *buf, size_t len)
 488 {
 489         struct acx_header *acx = buf;
 490         int ret;
 491
 492         wl1271_debug(DEBUG_CMD, "cmd configure");
 493
 494         acx->id = cpu_to_le16(id);
 495
 496         /* payload length, does not include any headers */
 497         acx->len = cpu_to_le16(len - sizeof(*acx));
 498
 499         ret = wl1271_cmd_send(wl, CMD_CONFIGURE, acx, len, 0);
 500         if (ret < 0) {
 501                 wl1271_warning("CONFIGURE command NOK");
 502                 return ret;
 503         }
 504
 505         return 0;
 506 }
 507
 508 int wl1271_cmd_data_path(struct wl1271 *wl, bool enable)
 509 {
 510         struct cmd_enabledisable_path *cmd;
 511         int ret;
 512         u16 cmd_rx, cmd_tx;
 513
 514         wl1271_debug(DEBUG_CMD, "cmd data path");
 515
 516         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 517         if (!cmd) {
 518                 ret = -ENOMEM;
 519                 goto out;
 520         }
 521
 522         /* the channel here is only used for calibration, so hardcoded to 1 */
 523         cmd->channel = 1;
 524
 525         if (enable) {
 526                 cmd_rx = CMD_ENABLE_RX;
 527                 cmd_tx = CMD_ENABLE_TX;
 528         } else {
 529                 cmd_rx = CMD_DISABLE_RX;
 530                 cmd_tx = CMD_DISABLE_TX;
 531         }
 532
 533         ret = wl1271_cmd_send(wl, cmd_rx, cmd, sizeof(*cmd), 0);
 534         if (ret < 0) {
 535                 wl1271_error("rx %s cmd for channel %d failed",
 536                              enable ? "start" : "stop", cmd->channel);
 537                 goto out;
 538         }
 539
 540         wl1271_debug(DEBUG_BOOT, "rx %s cmd channel %d",
 541                      enable ? "start" : "stop", cmd->channel);
 542
 543         ret = wl1271_cmd_send(wl, cmd_tx, cmd, sizeof(*cmd), 0);
 544         if (ret < 0) {
 545                 wl1271_error("tx %s cmd for channel %d failed",
 546                              enable ? "start" : "stop", cmd->channel);
 547                 return ret;
 548         }
 549
 550         wl1271_debug(DEBUG_BOOT, "tx %s cmd channel %d",
 551                      enable ? "start" : "stop", cmd->channel);
 552
 553 out:
 554         kfree(cmd);
 555         return ret;
 556 }
 557
 558 int wl1271_cmd_ps_mode(struct wl1271 *wl, u8 ps_mode)
 559 {
 560         struct wl1271_cmd_ps_params *ps_params = NULL;
 561         int ret = 0;
 562
 563         /* FIXME: this should be in ps.c */
 564         ret = wl1271_acx_wake_up_conditions(wl);
 565         if (ret < 0) {
 566                 wl1271_error("couldn't set wake up conditions");
 567                 goto out;
 568         }
 569
 570         wl1271_debug(DEBUG_CMD, "cmd set ps mode");
 571
 572         ps_params = kzalloc(sizeof(*ps_params), GFP_KERNEL);
 573         if (!ps_params) {
 574                 ret = -ENOMEM;
 575                 goto out;
 576         }
 577
 578         ps_params->ps_mode = ps_mode;
 579         ps_params->send_null_data = 1;
 580         ps_params->retries = 5;
 581         ps_params->hang_over_period = 128;
 582         ps_params->null_data_rate = cpu_to_le32(1); /* 1 Mbps */
 583
 584         ret = wl1271_cmd_send(wl, CMD_SET_PS_MODE, ps_params,
 585                               sizeof(*ps_params), 0);
 586         if (ret < 0) {
 587                 wl1271_error("cmd set_ps_mode failed");
 588                 goto out;
 589         }
 590
 591 out:
 592         kfree(ps_params);
 593         return ret;
 594 }
 595
 596 int wl1271_cmd_read_memory(struct wl1271 *wl, u32 addr, void *answer,
 597                            size_t len)
 598 {
 599         struct cmd_read_write_memory *cmd;
 600         int ret = 0;
 601
 602         wl1271_debug(DEBUG_CMD, "cmd read memory");
 603
 604         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 605         if (!cmd) {
 606                 ret = -ENOMEM;
 607                 goto out;
 608         }
 609
 610         WARN_ON(len > MAX_READ_SIZE);
 611         len = min_t(size_t, len, MAX_READ_SIZE);
 612
 613         cmd->addr = cpu_to_le32(addr);
 614         cmd->size = cpu_to_le32(len);
 615
 616         ret = wl1271_cmd_send(wl, CMD_READ_MEMORY, cmd, sizeof(*cmd),
 617                               sizeof(*cmd));
 618         if (ret < 0) {
 619                 wl1271_error("read memory command failed: %d", ret);
 620                 goto out;
 621         }
 622
 623         /* the read command got in */
 624         memcpy(answer, cmd->value, len);
 625
 626 out:
 627         kfree(cmd);
 628         return ret;
 629 }
 630
 631 int wl1271_cmd_scan(struct wl1271 *wl, u8 *ssid, size_t len,
 632                     u8 active_scan, u8 high_prio, u8 band,
 633                     u8 probe_requests)
 634 {
 635
 636         struct wl1271_cmd_trigger_scan_to *trigger = NULL;
 637         struct wl1271_cmd_scan *params = NULL;
 638         struct ieee80211_channel *channels;
 639         int i, j, n_ch, ret;
 640         u16 scan_options = 0;
 641         u8 ieee_band;
 642
 643         if (band == WL1271_SCAN_BAND_2_4_GHZ)
 644                 ieee_band = IEEE80211_BAND_2GHZ;
 645         else if (band == WL1271_SCAN_BAND_DUAL && wl1271_11a_enabled())
 646                 ieee_band = IEEE80211_BAND_2GHZ;
 647         else if (band == WL1271_SCAN_BAND_5_GHZ && wl1271_11a_enabled())
 648                 ieee_band = IEEE80211_BAND_5GHZ;
 649         else
 650                 return -EINVAL;
 651
 652         if (wl->hw->wiphy->bands[ieee_band]->channels == NULL)
 653                 return -EINVAL;
 654
 655         channels = wl->hw->wiphy->bands[ieee_band]->channels;
 656         n_ch = wl->hw->wiphy->bands[ieee_band]->n_channels;
 657
 658         if (test_bit(WL1271_FLAG_SCANNING, &wl->flags))
 659                 return -EINVAL;
 660
 661         params = kzalloc(sizeof(*params), GFP_KERNEL);
 662         if (!params)
 663                 return -ENOMEM;
 664
 665         params->params.rx_config_options = cpu_to_le32(CFG_RX_ALL_GOOD);
 666         params->params.rx_filter_options =
 667                 cpu_to_le32(CFG_RX_PRSP_EN | CFG_RX_MGMT_EN | CFG_RX_BCN_EN);
 668
 669         if (!active_scan)
 670                 scan_options |= WL1271_SCAN_OPT_PASSIVE;
 671         if (high_prio)
 672                 scan_options |= WL1271_SCAN_OPT_PRIORITY_HIGH;
 673         params->params.scan_options = cpu_to_le16(scan_options);
 674
 675         params->params.num_probe_requests = probe_requests;
 676         /* Let the fw autodetect suitable tx_rate for probes */
 677         params->params.tx_rate = 0;
 678         params->params.tid_trigger = 0;
 679         params->params.scan_tag = WL1271_SCAN_DEFAULT_TAG;
 680
 681         if (band == WL1271_SCAN_BAND_DUAL)
 682                 params->params.band = WL1271_SCAN_BAND_2_4_GHZ;
 683         else
 684                 params->params.band = band;
 685
 686         for (i = 0, j = 0; i < n_ch && i < WL1271_SCAN_MAX_CHANNELS; i++) {
 687                 if (!(channels[i].flags & IEEE80211_CHAN_DISABLED)) {
 688                         params->channels[j].min_duration =
 689                                 cpu_to_le32(WL1271_SCAN_CHAN_MIN_DURATION);
 690                         params->channels[j].max_duration =
 691                                 cpu_to_le32(WL1271_SCAN_CHAN_MAX_DURATION);
 692                         memset(&params->channels[j].bssid_lsb, 0xff, 4);
 693                         memset(&params->channels[j].bssid_msb, 0xff, 2);
 694                         params->channels[j].early_termination = 0;
 695                         params->channels[j].tx_power_att =
 696                                 WL1271_SCAN_CURRENT_TX_PWR;
 697                         params->channels[j].channel = channels[i].hw_value;
 698                         j++;
 699                 }
 700         }
 701
 702         params->params.num_channels = j;
 703
 704         if (len && ssid) {
 705                 params->params.ssid_len = len;
 706                 memcpy(params->params.ssid, ssid, len);
 707         }
 708
 709         ret = wl1271_cmd_build_probe_req(wl, ssid, len, ieee_band);
 710         if (ret < 0) {
 711                 wl1271_error("PROBE request template failed");
 712                 goto out;
 713         }
 714
 715         trigger = kzalloc(sizeof(*trigger), GFP_KERNEL);
 716         if (!trigger) {
 717                 ret = -ENOMEM;
 718                 goto out;
 719         }
 720
 721         /* disable the timeout */
 722         trigger->timeout = 0;
 723
 724         ret = wl1271_cmd_send(wl, CMD_TRIGGER_SCAN_TO, trigger,
 725                               sizeof(*trigger), 0);
 726         if (ret < 0) {
 727                 wl1271_error("trigger scan to failed for hw scan");
 728                 goto out;
 729         }
 730
 731         wl1271_dump(DEBUG_SCAN, "SCAN: ", params, sizeof(*params));
 732
 733         set_bit(WL1271_FLAG_SCANNING, &wl->flags);
 734         if (wl1271_11a_enabled()) {
 735                 wl->scan.state = band;
 736                 if (band == WL1271_SCAN_BAND_DUAL) {
 737                         wl->scan.active = active_scan;
 738                         wl->scan.high_prio = high_prio;
 739                         wl->scan.probe_requests = probe_requests;
 740                         if (len && ssid) {
 741                                 wl->scan.ssid_len = len;
 742                                 memcpy(wl->scan.ssid, ssid, len);
 743                         } else
 744                                 wl->scan.ssid_len = 0;
 745                 }
 746         }
 747
 748         ret = wl1271_cmd_send(wl, CMD_SCAN, params, sizeof(*params), 0);
 749         if (ret < 0) {
 750                 wl1271_error("SCAN failed");
 751                 clear_bit(WL1271_FLAG_SCANNING, &wl->flags);
 752                 goto out;
 753         }
 754
 755 out:
 756         kfree(params);
 757         return ret;
 758 }
 759
 760 int wl1271_cmd_template_set(struct wl1271 *wl, u16 template_id,
 761                             void *buf, size_t buf_len)
 762 {
 763         struct wl1271_cmd_template_set *cmd;
 764         int ret = 0;
 765
 766         wl1271_debug(DEBUG_CMD, "cmd template_set %d", template_id);
 767
 768         WARN_ON(buf_len > WL1271_CMD_TEMPL_MAX_SIZE);
 769         buf_len = min_t(size_t, buf_len, WL1271_CMD_TEMPL_MAX_SIZE);
 770
 771         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 772         if (!cmd) {
 773                 ret = -ENOMEM;
 774                 goto out;
 775         }
 776
 777         cmd->len = cpu_to_le16(buf_len);
 778         cmd->template_type = template_id;
 779         cmd->enabled_rates = cpu_to_le32(wl->conf.tx.rc_conf.enabled_rates);
 780         cmd->short_retry_limit = wl->conf.tx.rc_conf.short_retry_limit;
 781         cmd->long_retry_limit = wl->conf.tx.rc_conf.long_retry_limit;
 782
 783         if (buf)
 784                 memcpy(cmd->template_data, buf, buf_len);
 785
 786         ret = wl1271_cmd_send(wl, CMD_SET_TEMPLATE, cmd, sizeof(*cmd), 0);
 787         if (ret < 0) {
 788                 wl1271_warning("cmd set_template failed: %d", ret);
 789                 goto out_free;
 790         }
 791
 792 out_free:
 793         kfree(cmd);
 794
 795 out:
 796         return ret;
 797 }
 798
 799 static int wl1271_build_basic_rates(u8 *rates, u8 band)
 800 {
 801         u8 index = 0;
 802
 803         if (band == IEEE80211_BAND_2GHZ) {
 804                 rates[index++] =
 805                         IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_1MB;
 806                 rates[index++] =
 807                         IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_2MB;
 808                 rates[index++] =
 809                         IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_5MB;
 810                 rates[index++] =
 811                         IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_11MB;
 812         } else if (band == IEEE80211_BAND_5GHZ) {
 813                 rates[index++] =
 814                         IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_6MB;
 815                 rates[index++] =
 816                         IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_12MB;
 817                 rates[index++] =
 818                         IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_24MB;
 819         } else {
 820                 wl1271_error("build_basic_rates invalid band: %d", band);
 821         }
 822
 823         return index;
 824 }
 825
 826 static int wl1271_build_extended_rates(u8 *rates, u8 band)
 827 {
 828         u8 index = 0;
 829
 830         if (band == IEEE80211_BAND_2GHZ) {
 831                 rates[index++] = IEEE80211_OFDM_RATE_6MB;
 832                 rates[index++] = IEEE80211_OFDM_RATE_9MB;
 833                 rates[index++] = IEEE80211_OFDM_RATE_12MB;
 834                 rates[index++] = IEEE80211_OFDM_RATE_18MB;
 835                 rates[index++] = IEEE80211_OFDM_RATE_24MB;
 836                 rates[index++] = IEEE80211_OFDM_RATE_36MB;
 837                 rates[index++] = IEEE80211_OFDM_RATE_48MB;
 838                 rates[index++] = IEEE80211_OFDM_RATE_54MB;
 839         } else if (band == IEEE80211_BAND_5GHZ) {
 840                 rates[index++] =
 841                         IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_9MB;
 842                 rates[index++] =
 843                         IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_18MB;
 844                 rates[index++] =
 845                         IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_24MB;
 846                 rates[index++] =
 847                         IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_36MB;
 848                 rates[index++] =
 849                         IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_48MB;
 850                 rates[index++] =
 851                         IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_54MB;
 852         } else {
 853                 wl1271_error("build_basic_rates invalid band: %d", band);
 854         }
 855
 856         return index;
 857 }
 858
 859 int wl1271_cmd_build_null_data(struct wl1271 *wl)
 860 {
 861         struct wl12xx_null_data_template template;
 862
 863         if (!is_zero_ether_addr(wl->bssid)) {
 864                 memcpy(template.header.da, wl->bssid, ETH_ALEN);
 865                 memcpy(template.header.bssid, wl->bssid, ETH_ALEN);
 866         } else {
 867                 memset(template.header.da, 0xff, ETH_ALEN);
 868                 memset(template.header.bssid, 0xff, ETH_ALEN);
 869         }
 870
 871         memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
 872         template.header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_DATA |
 873                                                 IEEE80211_STYPE_NULLFUNC |
 874                                                 IEEE80211_FCTL_TODS);
 875
 876         return wl1271_cmd_template_set(wl, CMD_TEMPL_NULL_DATA, &template,
 877                                        sizeof(template));
 878
 879 }
 880
 881 int wl1271_cmd_build_ps_poll(struct wl1271 *wl, u16 aid)
 882 {
 883         struct wl12xx_ps_poll_template template;
 884
 885         memcpy(template.bssid, wl->bssid, ETH_ALEN);
 886         memcpy(template.ta, wl->mac_addr, ETH_ALEN);
 887
 888         /* aid in PS-Poll has its two MSBs each set to 1 */
 889         template.aid = cpu_to_le16(1 << 15 | 1 << 14 | aid);
 890
 891         template.fc = cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
 892
 893         return wl1271_cmd_template_set(wl, CMD_TEMPL_PS_POLL, &template,
 894                                        sizeof(template));
 895
 896 }
 897
 898 int wl1271_cmd_build_probe_req(struct wl1271 *wl, u8 *ssid, size_t ssid_len,
 899                                u8 band)
 900 {
 901         struct wl12xx_probe_req_template template;
 902         struct wl12xx_ie_rates *rates;
 903         char *ptr;
 904         u16 size;
 905         int ret;
 906
 907         ptr = (char *)&template;
 908         size = sizeof(struct ieee80211_header);
 909
 910         memset(template.header.da, 0xff, ETH_ALEN);
 911         memset(template.header.bssid, 0xff, ETH_ALEN);
 912         memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
 913         template.header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
 914
 915         /* IEs */
 916         /* SSID */
 917         template.ssid.header.id = WLAN_EID_SSID;
 918         template.ssid.header.len = ssid_len;
 919         if (ssid_len && ssid)
 920                 memcpy(template.ssid.ssid, ssid, ssid_len);
 921         size += sizeof(struct wl12xx_ie_header) + ssid_len;
 922         ptr += size;
 923
 924         /* Basic Rates */
 925         rates = (struct wl12xx_ie_rates *)ptr;
 926         rates->header.id = WLAN_EID_SUPP_RATES;
 927         rates->header.len = wl1271_build_basic_rates(rates->rates, band);
 928         size += sizeof(struct wl12xx_ie_header) + rates->header.len;
 929         ptr += sizeof(struct wl12xx_ie_header) + rates->header.len;
 930
 931         /* Extended rates */
 932         rates = (struct wl12xx_ie_rates *)ptr;
 933         rates->header.id = WLAN_EID_EXT_SUPP_RATES;
 934         rates->header.len = wl1271_build_extended_rates(rates->rates, band);
 935         size += sizeof(struct wl12xx_ie_header) + rates->header.len;
 936
 937         wl1271_dump(DEBUG_SCAN, "PROBE REQ: ", &template, size);
 938
 939         if (band == IEEE80211_BAND_2GHZ)
 940                 ret = wl1271_cmd_template_set(wl, CMD_TEMPL_CFG_PROBE_REQ_2_4,
 941                                               &template, size);
 942         else
 943                 ret = wl1271_cmd_template_set(wl, CMD_TEMPL_CFG_PROBE_REQ_5,
 944                                               &template, size);
 945         return ret;
 946 }
 947
 948 int wl1271_cmd_set_default_wep_key(struct wl1271 *wl, u8 id)
 949 {
 950         struct wl1271_cmd_set_keys *cmd;
 951         int ret = 0;
 952
 953         wl1271_debug(DEBUG_CMD, "cmd set_default_wep_key %d", id);
 954
 955         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 956         if (!cmd) {
 957                 ret = -ENOMEM;
 958                 goto out;
 959         }
 960
 961         cmd->id = id;
 962         cmd->key_action = cpu_to_le16(KEY_SET_ID);
 963         cmd->key_type = KEY_WEP;
 964
 965         ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
 966         if (ret < 0) {
 967                 wl1271_warning("cmd set_default_wep_key failed: %d", ret);
 968                 goto out;
 969         }
 970
 971 out:
 972         kfree(cmd);
 973
 974         return ret;
 975 }
 976
 977 int wl1271_cmd_set_key(struct wl1271 *wl, u16 action, u8 id, u8 key_type,
 978                        u8 key_size, const u8 *key, const u8 *addr,
 979                        u32 tx_seq_32, u16 tx_seq_16)
 980 {
 981         struct wl1271_cmd_set_keys *cmd;
 982         int ret = 0;
 983
 984         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 985         if (!cmd) {
 986                 ret = -ENOMEM;
 987                 goto out;
 988         }
 989
 990         if (key_type != KEY_WEP)
 991                 memcpy(cmd->addr, addr, ETH_ALEN);
 992
 993         cmd->key_action = cpu_to_le16(action);
 994         cmd->key_size = key_size;
 995         cmd->key_type = key_type;
 996
 997         cmd->ac_seq_num16[0] = cpu_to_le16(tx_seq_16);
 998         cmd->ac_seq_num32[0] = cpu_to_le32(tx_seq_32);
 999
1000         /* we have only one SSID profile */
1001         cmd->ssid_profile = 0;
1002
1003         cmd->id = id;
1004
1005         if (key_type == KEY_TKIP) {
1006                 /*
1007                  * We get the key in the following form:
1008                  * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
1009                  * but the target is expecting:
1010                  * TKIP - RX MIC - TX MIC
1011                  */
1012                 memcpy(cmd->key, key, 16);
1013                 memcpy(cmd->key + 16, key + 24, 8);
1014                 memcpy(cmd->key + 24, key + 16, 8);
1015
1016         } else {
1017                 memcpy(cmd->key, key, key_size);
1018         }
1019
1020         wl1271_dump(DEBUG_CRYPT, "TARGET KEY: ", cmd, sizeof(*cmd));
1021
1022         ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
1023         if (ret < 0) {
1024                 wl1271_warning("could not set keys");
1025                 goto out;
1026         }
1027
1028 out:
1029         kfree(cmd);
1030
1031         return ret;
1032 }
1033
1034 int wl1271_cmd_disconnect(struct wl1271 *wl)
1035 {
1036         struct wl1271_cmd_disconnect *cmd;
1037         int ret = 0;
1038
1039         wl1271_debug(DEBUG_CMD, "cmd disconnect");
1040
1041         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1042         if (!cmd) {
1043                 ret = -ENOMEM;
1044                 goto out;
1045         }
1046
1047         cmd->rx_config_options = cpu_to_le32(wl->rx_config);
1048         cmd->rx_filter_options = cpu_to_le32(wl->rx_filter);
1049         /* disconnect reason is not used in immediate disconnections */
1050         cmd->type = DISCONNECT_IMMEDIATE;
1051
1052         ret = wl1271_cmd_send(wl, CMD_DISCONNECT, cmd, sizeof(*cmd), 0);
1053         if (ret < 0) {
1054                 wl1271_error("failed to send disconnect command");
1055                 goto out_free;
1056         }
1057
1058 out_free:
1059         kfree(cmd);
1060
1061 out:
1062         return ret;
1063 }